Lower journal for revolving doors



March 22, 1938. "r. M. HAGENBOOK 2,111,773

LOWER JOURNAL FOR REVOLVING DOORS n Filed Dec. 1l, 1936 1 in la l lll.: si?

Patented Mar. 22, 1938 UNITEH stars n 2,111,773 LOWER' JOURNAL For. nnvotvina noons Application December 11, 1936, Serial No. 115,431

15 Claims.

My invention relates broadly to revolving doors vertical sectional view taken through the lower and more particularly to a construction of lower journal for revolving doors. l

One of the objects of my invention is to provide a construction of lower journal for revolving doors in which the retraction and projection o-f the journaling means for the revolving door may be readily accomplished for allowing the revolving doors to be collapsed and shifted against the side ci the drum or housing of the revolving door and readily restored to normal revolving position.

Another object of my invention is to provide a simplified construction of lower journal for revolving doors by which deleterious effects of dirt, grit and the like, upon the moving parts of the revolving door journal are substantially eliminated by constructing the lower journal in such manner that entry of dirt, grit and the like, is substantially obstructed.

A further object of my invention is to provide a simplied construction of self-oiling lower journal for the lower portion of a revolving door having means for enclosing the moving parts of the journal in a substantially dust and dirt tight housing for protecting the journal against seepage oi dust, grit and the like. Y

A still further object of my invention is to provide a'construction of retractible and projectible journal `for revolving ydoors including an antifriction thrust bearing adapted to receive the thrust of the hold-down spring.

Another object of my invention is to provide a simplified construction of anti-friction thrust bearing for journaling'the lower portion of a revolving door in which the anti-friction thrust bearing is enclosed in a substantially dust and dirt tight housing adjacent the base of the central shaft of the revolving door while beingl free for retraction or projection for allowing the shifting of the collapsed revolving door wings `to a position adjacent one side of the revolving door drum or housing or the journaling of the doors in revolving position.

Other and further objects of my invention reside in the construction of lower journal forrevolving doors as set forth in the specification hereinafter following by reference to the accompanying drawing in which:

Figure 1 is a vertical sectional view taken through the lower journal of the revolving door with certain of the parts illustrated in side elevation and showing the journal in projected position for rotation of the revolving door wings within the revolving door housing; Fig. 2 is a journal or the revolving door and illustrating the journal in retracted position for permitting the shifting of the collapsed wings of the revolving door to one side of therevolving door drum or housing, certain of the parts being illustrated in side elevation; Fig, 3 is an enlarged cross sectional view of the lower end of the shaft structure of the revolving door and illustrating a portion of the retractible and projectible pintle in side elevation and showing lthe structure by which seepage oi dust and dirt into the journal housing is obstructed; Fig. 4 is a transverse sectional View taken on line d-fl of Fig. 1; Fig. 5 is a side elevational view partially broken away and illusrated in cross section and showing the projectible. and retractible pintle employed in the construction of my invention; Fig. 6 is a vertical sectional view taken through the vertically shiftable control member bywhich movement is imparted to the pintle for effecting retraction or projection thereof; Fig.f7 is a vertical sectional view showing the cylindrical sleeve employedadjacent the base of the shaft of the revolving door in the -.construction of my invention; and Fig. 8 illustrates partially in side elevation and partially in cross section the internal concentric sleeve which surrounds the 'rctractible and projectible pintle in -theconstruction of my invention. v My invention is directed to a simplified construction of lower journal for revolving doors which is relatively inexpensive in production and which may be readily assembled. My invention provides for substantially enclosing the thrust bearing on which a revolving door is mounted and preventing the seeping of dust and grit into the thrust bearing by providing a serpentine obstructive path for the seepage of dust and grit to the bearing, A minimum number of parts are required for substantially enclosing the thrust bearing in a substantially dust and dirt tight housing, thereby rendering the structure of my invention simple and yet highly effective. It will be understood that the principles of my invention may be embodied in various forms and that details are not material. The present embodiment of the invention, therefore, is to be considered as merely indicative. The form illustrated in the drawing and hereinafter described in detail has been found to be one of the practical embodiments and capable of eiiicient operation and practical in construction.

Referring to the drawing in Vincre detail, reference character l designates two of the oppositely projecting revolving door wings having their inner longitudinally extending edges substantially abutting the exterior wall of the housing 2. The housing 2 substantially encloses the tubular shaft 3 of the revolving door. The door has been foreshortened and a showing of the wing hangers omitted for purposes of simplification. A sleeve member 4 is provided in the lower end of the housing 2 and snugly ts therein for substantially preventing the entry of dust, dirt, grit and the like into the lower end of the housing 2. The sleeve member 4 is provided with a shoulder 5 adjacent its upper extremity. The upper end of the sleeve member 4 is provided with an aperture or reduced section which is internally screw threaded as indicated at 6. The lower end of sleeve member 4 is recessed to provide an internal annular seat or shoulder 1. The recess in the end of sleeve member 4 is internally screw threaded as indicated at 8. The tubular central shaft 3 is provided with screw threads 9 on the end thereof, .adapted to engage the internal screw threads 6 in the upper end of sleeve member 4.

An internal concentric sleeve I is disposed within sleeve member 4 on the pintle 20, which is slidably and non-rotatively movable with respect thereto. The internal concentric sleeve IIJ has an annular flange II thereon which engages over the lower end of a bushing I4. Bushing I4 serves as a packing means between sleeve member 4 and internal concentric sleeve I Il and is constructed from self-oiling bronze.

The recessed end of the sleeve member 4 is adapted to receive the self-oiling bronze disc washer I5 and the gasket I 6 in super-imposed relation as shown more particularly in Fig. 3. The gasket I6 is provided with a central thickened portion I6a serving as a seal with respect to the cylindrical Walls of the pintle 2B. The pintle 20 has a longitudinally extending keyway 26a therein adapted to be aligned with a corresponding keyway Illa in the internal concentric sleeve I6 for receiving the key 2I by which a positive lock is provided between the pintle 20 and the internal concentric sleeve I 6 while allowing retraction or projection of the pintle 2U.

The self-oiling bronze disc washer I5 and gasket I6 are retained in position by means of the screw threaded end plate I1. The end plate ll has external screw threads I8 thereon adapted to engage the internal screw threads 8 in the recess in the end of sleeve member 4. Sockets I9 are provided in the lower face of end plate Il for facilitating the insertionor removal of end plate I'l. The end plate Il has a central chamfered portion I'Ia adapted to receive the central thickened portion Ia of gasket I6 for insuring a relatively tight seal around pintle 2E! and obstructing the seepage of dirt, dust, grit and the like toward the housing which encloses the thrust bearing.

It will be noted that the flange II on the concentric sleeve has an outer diameter substantially less than the inner diameter of the sleeve member 4, and that the length of the internal sleeve l0 is substantially shorter than the length of the smooth inner bore of the sleeve member 4, so that the sleeve II) will not bind in the sleeve member 4 or against shaft 3, upon the tightening of end plate I'I. On the contrary, the sleeve member 4 is free to rotate with respect to the sleeve I0 with a minimum of wear because of the self-oiling bushings I4 and I5 which constitute rotary and end bearing members, respectively. Dirt, grit, etc., are prevented from entering these bearing members primarily by the packing washer or gasket I6, and also by reason of the serpentine path through the end and rotary bearings and around the flange II. This lower bearing assembly in combination with an upper sleeve bearing 36, hereinafter more fully described, serves to stabilize the operation of the revolving door about the pintle 2i), with a minimum of wear in the bearings due to the provisions of my invention, and with resulting long life for the bearings.

The lower end of pintle Z0 is provided with a frusto-conical terminus which is slotted as indicated at 22 allowing the terminus to be received in the frusto-conical seat 23 which is suitably Supported in the base or floor over which the revolving door operates. A diametrically extending member 23a serves as a means for retaining the pintle in a fixed position when the pintle is lowered into the seat 23.

The upper end of pintle 2l) is provided with an extension 24 of reduced, section having a screw threaded recess 25 in the upper end thereof for receiving the end of the headed screw threaded stud 26 which extends through the internal cylindrical recess 2l in coupling member 23 and through the bore 29 extending therefrom, through upper thrust bearing ball race plate 30 through the lower thrust bearing ball race plate 3l and into the screw threaded socket 25 in the upper end of the extension 24 on pintle 2U. The headed screw threaded stud 2li serves as a connecting means between coupling member 28 and the extension 24 of pintle 23 for allowing a longitudinal force imparted through coupling member 28 to be communicated to pintle 29 so that pintle 20 may be projected or retracted while the door is free to revolve. I provide a set of ball bearings 32 between the upper and lower thrust bearing ball bearing race plates 30 and 3I. The ball bearings 32 provide an anti-friction surface against which the thrust of spring 42 is effective.

The coupling member 23 has the cylindrically recessed end thereof arranged to receive the end of the link member 33 which extends longitudinally through the tubular central shaft 3. The juncture formed by the entry of link 33 into the cylindrically recessed end of coupling member 28 provides a shoulder 34 on which gasket member 35 is arranged to seat. Gasket member 35 has an inner bore tting snugly with respect to the external cylindrical surface of link 33, The external cylindrical periphery of the gasket 35 conforms snugly with the internal diameter of tubular central shaft The lowermost limit of gasket 35 is the shoulder 34 formed by the juncture of coupling member 28 and link member 33. The gasket 35 substantially obstructs the passage of dust, dirt, or other deleterious matter downwardly and into the housing within which the thrust bearing is confined. As has already been explained, dust, dirt, foreign matter, and other deleterious material is prevented from reaching the thrust bearing from below because of the serpentine passage through which such matter would have to pass because of the construction of the journal at the base of the revolving door. To further guard against the seepage of dust, dirt or other deleterious matter into the thrust bearing, I provide a cylindrical sleeve 3S constructed from self-oiling bronze and secured to the extension 24 of the pintle 2B and disposed within the tubular central shaft 3 in a position normally just below the ball races which confine the ball bearings 32. When the pintle 20 is in retracted position the sleeve 35 moves with the pintle substantially protecting the thrust bearing within its enclosure as heretofore described. As the link 33 is shifted upwardly, gasket 35 is correspondingly moved as the outer cylindrical periphery of gasket 35 is free to slide with respect to the inner wall of the tubular central shaft t thus protecting the thrust bearing within its housing as described.

The lower end of link 33 is secured in the upper end of the cylindrical recess 2l in coupling member 23 by suitable means such as diametrically extending rivet or pin 3l. The upper end of link 33 fits into cylindrical socket 35 in the lower portion of vertically shiftable or slidable member 39. The socket is provided with elongated slots lill in diametrically opposite positions in the side walls of the recessed portion 38. A transversely extending pin 4l, secured in the upper end of link Sit passes through the Slots 40 thus preventing relative rotation between link member 33 and slidable member 39 while allowing a limited amount of lost motion between the link 33 and the slidable member 39. A coil spring 42 is mounted in recess 38 and is effective against the upper end of link member Se for normally holding the end 22 of pintle 29 in socket 23 in the foundation or base support for the revolving door.

'Ihe shiftable or slidable member 39 is provided with means for loclnng the shiftable member in either of two limiting positions. The slidable or shiftable member 39 is provided adjacent its upper extremity with a laterally extending cylindrical recess 43 adapted to receive a sleeve member or liner 44 within which coil spring 45 is operative to normally eject detent 45 having a head and flange 4l thereon by which either aperture 48 or 49 in cylindrical housing 2 may be engaged for locking slidable member 3S) in either of two positions. The spring operated detent is provided with an oil passage extending into the housing which surrounds the detent as indicated at 55. The lsleeve 44 projects from the side o-f slidable member 39 and through the longitudinally extending slot 5l in one wall of the tubular central shaft It as shown. The shiftable member 39 is also provided with a finger grip 52 which is relatively narrow in section and which extends through slot 5l in the tubular central shaft 3 and also through the slot 53 in the housing 2 so that the finger grip 52 is free to be shifted vertically within such limits as will permit the retraction or projection of the pintle. The linger grip 52 is secured to the shiftable member 39 in any desired manner such as by way of screw member 54 which passes through the aperture 55 in the shiftable member 39'. i

Thus it will be seen thatV manipulation of the finger grip 52 in an upward direction serves to retract pintle 2li because transverse pin 4i of link 33 is engaged in the end limits of slots 40 and the force communicated through link 33 to coupling member 23 and through the headed screw threaded stud it to the upper extension 24 of pintle 2E), allowing the pintle to be retracted in the position illustrated in Fig. 2 and the revolving door wings collapsed and the collapsed door moved to. one side of the door drum or housing. The pintle is latched at the retracted position byfthe engagement of the end detent 46 in aperture 4B. When the revolving door wings have been restored to the central position within the doordrum or housing, pintle 25 is ready to be projected and can be projected by downward movement of finger grip 52 and the shifting of detent 46 into aperture 49, the force being communicated through link 33, coupling member 28, stud 26 to the upper extension 24 of the pintle to the lower end 2U of the pintle. Sufficient lost motion is provided to allow proper adjustment of the headed end of stud 26 in cylindrical recess 2l in the upper end of coupling member 23. The retraction and projection steps heretofore explained are carried out while a relatively tight seal is maintained at all times in the lower end of the journal as heretofore described in connection with Fig. 3. The self-oiling characteristics of the sleeve 36, bushing I4 and washer i5 are such that lubrication of the lower journal becomes unnecessary. The serpentine path to the thrust bearing is such that dust, dirt and foreign matter is substantially excluded from the bearing and long useful life of the bearing assured.

While I have described my invention in one of its preferred embodiments, I desire that it be understood that modifications may be made and that no limitations upon my invention are intended other than may be imposed by the scope of the appended claims.

What I claim as new and desire to secure by Letters Patent of the United States is as follows:

1. Mounting means for revolving doors comprising in combination with a tubular shaft, a projectible and retractible pintle in the end of said tubular shaft, a thrust bearing for rotatably journaling the revolving doors with respect to the pintle, and a labyrinth packing device mounted on the said end of said shaft and surrounding said pintlel for preventing the seepage of dust, grit and the like into said thrust bearing.

2. Mounting means for revolving doors comprising in combination with a tubular shaft, a projectible and retractible pintle in the end of said tubular shaft, a thrust bearing for rotatably journaling the revolving doors with respect to the pintle, and a set of concentric sleeve members Y disposed between said shaft and said pintle and having the outermost one thereof fixed to said shaft and the innermost one surrounding said pintle, the said sleeve members being intertted to prevent direct entry of dust, grit and the like into the thrust bearing except through a serpeny tine path.

3. Mounting means for revolving doors comprising in combination with a tubular shaft, a control shaft extending through said tubular shaft, a pintle longitudinally shiftable within said tubular shaft, a thrust bearing disposed between said control shaft and said pintle, and means for substantially enclosing said thrust bearing within a portion of the tubular shaft, comprising packing means between said control shaft and said tubular shaft and a multiplicity of telescopically arranged sleeve members disposed between said tubular shaft and said pintle and having the outermost one thereof fixed to said shaft and the innermost one surrounding said pintle, the said sleeve members being interfltted to obstruct entry of dust, grit and the like into the thrust bear'-Y ing while allowing projection and retraction of said pintle.

4. Mounting means for revolving doorscornprising in combination with a tubular shaft, a control shaft extending through said tubular shaft, a pintle projectible and retractible through the end of said tubular shaft, a thrust bearing disposed between said pintle and said control shaft, and means carried by said tubular shaft and establishing frictional inter-connection with the exterior wall of said pintle, said means comprising a multiplicity of concentrically arranged sleeve members operating to obstruct the direct entry of dust, dirt, grit and the like into the thrust bearing.

5. Mounting means for revolving doorscomprising in combination with'a tubular shaft, a pintle projectible and retractible through the end of said tubular shaft, a control member shiftable to either of two limiting positions through said tubular shaft, a thrust bearing disposed between said control member and the upper end of said pintle, a gasket member disposed about said control member and fitting slidably within sai-d tubular shaft, and means carried by the end of said tubular shaft and operating as a seal with respect to said pintle, said gasket and said means substantially preventing the seepage of dust into said thrust bearing.

6. Mounting means for revolving doors comprising in combination with a tubular shaft, a pintle projectible and retractible through the end of said tubular shaft, a control member shift'able to either of two limiting positions through said tubular shaft, a thrust bearing disposed between said control member and the upper end of said pintle, a gasket member disposed about said control member and fitting slidably within said tubular shaft, a cylindrical sleeve member carried by the end of said tubular shaft, a plurality of concentric bushings disposed within said sleeve member, one of said.` bushings being slidably and nonrotatively mounted with respect to said pintle, and means engaging the end of said sleeve member for maintaining said bushings in position with respect to said pintle, whereby said thrust bearing is substantially protected against the entry of dust while allowing said pintle to be projected and retracted.

7. Mounting means for revolving doors cornprising in combination with a tubular shaft, a tubular housing concentrically disposed about said shaft, a pintle projectible and retractible through the end of said tubular shaft, a control member shiftable to either of two limiting positions through said tubular shaft, a thrust bearing disposed between said control member and the upper end of said pintle, a gasket member disposed about said control member and tting slidably within said tubular shaft, a cylindrical sleeve member carried by the end of said tubular shaft and having an outer diameter equal to the inner diameter of said tubular housing, a multiplicity of concentrically disposed bushings within said sleeve member, means for keying one of said bushings with respect to said pintle for allowing projection or retractio-n of said pintle in a predetermined vertical plane, and means secured in the end of said sleeve member for confining said bushings within said sleeve member.

8. Mounting means for revolving doors comprising in combination with a tubular shaft, a tubular housing concentrically disposed about said shaft, a pintle projectible and retractible through the end o-f said tubular shaft, a control member shiftable to either of two limiting positions through said 'tubular shaft, a thrust bearing disposed between said control member and the upper end of said pintle, a gasket member disposed about said control member and fitting slidably within said tubular shaft, a cylindrical sleeve member carried by the end of said tubular shaft and having an outer diameter equal to the inner diameter of said tubular housing, a multiplicity of concentrically disposed bushings within said sleeve member, means for keying one of said bushings with respect to said pintle for allowing projection or retraction of said pintle in a predetermined vertical plane, and means for confining said bushings within said sleeve member, said last mentioned means including a sealing gasket establishing an annular sealing Zone about said pintle.

9. A lower journal for revolving doors comprising in combination with a tubular shaft, a pintle projectible and retractible through the end of the tubular shaft, a sleeve carried adjacent to the upper end of said pintle and slidable within the cylindrical walls of said tubular shaft, and a self-oiling bushing mounted on the said end of said shaft and engaged with said pintle for journaling said tubular shaft with respect to the lower end of said pintle.

10. A lower journal for revolving doors comprising in combination with a tubular shaft, a tubular housing concentrically disposed about said shaft, a pintleprojectible and retractible through the end of said tubular shaft, said pintle having an upper portion of reduced section, a self-oiling sleeve carried by the reduced section of said pintle and slidable interiorly of said tubular shaft, and a plurality of concentrically disposed sleeve members mounted adjacent the lower end of said tubular shaft and filling the space between said tubular shaft and said tubular housing and surrounding the projectible and retractible pintle, the outermost of one of Said sleeve members being carried by said shaft and rotatable with respect to said pintle.

il. A lower journal for revolving doors comprising in combination with a tubular shaft, a pintle projectible and retractible through the end of said shaft, a cylindrical sleeve member carried by the end of said shaft, a plurality of concentric bushings disposed within said sleeve member, one of said bushings being slidably and non-rotatively mounted with respect to said pintle, and means engaging the end of said sleeve member for maintaining said bushings in position.

l2. A lower journal for revolving doors as set forth in claim ll and wherein said means includes a sealing gasket establishing an annular sealing zone about said pintle.

13. A lower journal for revolving doors as set forth in claim 11, and wherein said means includes a self-oiling disc washer disposed in abutment with. at least the bushing which is non-rotatively mounted with respect to said pintle.

14. A lower journal for revolving doors as set forth is claim l1, and wherein another of said plurality of bushings constitutes a self-oiling bearing member for facilitating rotary movement of said shaft with respect to said pintle.

15. A lower journal for revolving doors comprising in combination with a shaft, a pintle, a

Y cylindrical sleeve member carried by said shaft,

a bushing having a flange thereon at its lower end slidably and non-rotatively mounted with respect to said pintle, a seif-oiling cylindrical bushing disposed between said sleeve member and the aforesaid bushing above the said ange thereon, a self-oiling disc washer carried by said pintle beneath said flange, and means carried by said sleeve member for supporting said Washer and said bushings in position.

THURLOE M. HAGENBOOK. 

